Documentation Update

- Added a task-tutorial man page mention to the help and version command.
- Corrected comment about attribute entity encoding/decoding.

src/report.cpp

@@ -210,10 +210,8 @@ int shortUsage (std::string &outs)
   std::stringstream out;
   out << table.render ()
       << std::endl
-      << "See http://taskwarrior.org/wiki/taskwarrior/Download for the latest "
-      << "releases and a full tutorial.  New releases containing fixes and "
-      << "enhancements are made frequently.  Join in the discussion of task, "
-      << "present and future, at http://taskwarrior.org"
+      << "Documentation for task can be found using 'man task', 'man taskrc', "
+      << "or 'man task-tutorial' at http://taskwarrior.org"
       << std::endl
       << std::endl;